'Anaphylactic shock?' asked Kershaw.

'Yeah, that's it.'

'It's an extreme allergic reaction to a particular substance,' the young forensic scientist told Longbright. 'Her immune system would already have been compromised because she was a junkie. Under anaphylaxis, the system decides that some alien substance poses a danger, and overreacts by creating huge quant.i.ties of the antibody immunoglobulin E. The body releases an excess amount of histamine and the throat closes up, making it difficult to breathe.'

'What happens after that?' asked Longbright.

'All sorts of problems can occur,' said Kershaw, 'but mainly, immunoglobulin E expands blood vessels, causing a drop in blood pressure, which leads to loss of consciousness.' As if to avoid letting Renfield off the hook, he added, 'There are usually visible signs a paramedic would immediately notice. Swelling and rashes on the skin, or on the lips and tongue if it was something ingested orally.'

'Even Finch didn't know what had set her off,' snapped Renfield. 'It's a mistake anyone could have made. He said it could have been any number of things.'

'That's right. Nuts, drugs like morphine or X-ray dye, dental painkillers, something in the dope she'd taken,' Kershaw confirmed.

'Finch's competence in diagnosing her isn't the matter at hand,' said Longbright. 'I want to know whether he made you so angry that you attacked him.'

'Of course not. G.o.d, he'd made me angry often enough in the past. You think I couldn't take it from him? He had a go at me, and I left.'

'Then why didn't you tell us when we first talked?' Longbright demanded.

'Because he and his lads dropped off a woman at a morgue who wasn't dead,' said Kershaw disgustedly. 'He didn't turn up at Bayham Street with a paramedic, just one of his constables. When they'd found her in the doorway, her body was cold to the touch and showing signs of cyanosis. They couldn't find a pulse, so they made an a.s.sumption, when a hospital might have saved her life.'

'It wasn't you who found the body, was it?' said Longbright. Renfield was too experienced to have made such a mistake.

'My PC is nineteen years old, Longbright. The kid's in shock; it's his second week on the beat. She would have died anyway, if not this week then the next. Finch didn't care about that. It was my call, but he told me he was going to report the boy.' Renfield looked miserable. 'He never let anything go. That's why he wouldn't support your promotion, Kershaw. He didn't trust you not to make the same kind of mistakes.'

'So before you left the mortuary, you waited until his back was turned, then tore the pages out of his report and destroyed them.'

Renfield shook his head violently. 'No, I never saw any report. I didn't think he'd had time to write it up, and wouldn't have touched it if he had.'

Longbright left the interview room in a bad mood. Whatever else Renfield was, he wasn't a liar. She went to Bryant's desk and sat down behind it, rubbing her eyes, hoping that being in his tobacco-stained room would somehow provide her with inspiration. On the chart before her was the time line of Finch's final hours. All the question marks and gaps she had left were now filled in, and they were no closer to the truth.

She checked the clock on the wall: two forty-five P.M P.M. Two and a quarter hours left before the Princess turned up with her entourage to find the staff under arrest and the place in a shambles. She could almost see Kasavian and Faraday rubbing their hands with glee.

There was still one loose lead to tie up. The missing boy, Lilith's former lover, Samuel. She was considering the problem when Kershaw knocked on her door and stuck his head through. 'Can I let Renfield go, Janice? He's kicking up a fuss.'

'Apply the same restrictions I've applied to everybody else, then get back to the morgue. I want you to test out something for me. It's a ridiculous idea, but it's the only one left. This is my last shot before we're out of time.'

'What do you want me to do?'

'a.s.sume Finch was in pain, on medication, not thinking clearly. He knew he wouldn't live to enjoy his retirement. I want you to see if it's at all possible...' She wondered if she could even bring herself to say the words. Kershaw waited obediently. 'Could it have started with an accident? Knowing that he was dying and contemplating suicide, could he have pulled the ultimate practical joke on his old nemesis? When the fan blade came loose and fell on him, you don't think he could have decided to make it look like murder, just to get the most bitter last laugh of all on Arthur?'

43

IN PLAIN SIGHT Longbright looked around at Arthur Bryant's memorabilia. On the opposite wall was a sampler st.i.tched in grat.i.tude by the Oregon Ladies' Sewing Bee after he had solved the Chemeketa Rain Devil case for them in 1963. It read The Greatest Secrets Are Hidden in Plain Sight The Greatest Secrets Are Hidden in Plain Sight. It was a favourite sentiment of Bryant's. What was hidden in plain sight here?

She missed him looking over her shoulder, discoursing on any bizarre subject that took his fancy. She missed the stagnant reek of his pipe, his furtive watering of the sickly marijuana plant beneath his desk, the tottering stacks of mouldy books he dumped on her, the impossible requests, the childlike innocence in his eyes whenever she suspected him. You'd know what to look for, You'd know what to look for, she thought. she thought. You've shown us how a thousand times over. Why can't I remember what to do now? You've shown us how a thousand times over. Why can't I remember what to do now?

She studied the books on the shelves, trying to imagine Bryant in the room, arguing with John about methodology. He'd be stepping off on a tangent, refusing to follow the obvious routes of detection, leaving the doorstepping and data-gathering to others while he blew the dust from volumes of ancient myth and folklore. It was amazing how he managed to reach accurate conclusions by examining the case from the wrong end, and no matter how often he explained the process to her, it still didn't make sense. She read the spines on the opposite shelves: Victorian Water Closets: A Social History, Sumerian Religious Beliefs & Legends, Colonic Exercises for Asthmatics, The Adventures of Captain Marvel, Mend Your Own Pipes, The Complete Works of Edgar Allan Poe, p.o.r.nography and Paganism, Courtship Rituals of Papua New Guinea, Code-Breaking in Braille Victorian Water Closets: A Social History, Sumerian Religious Beliefs & Legends, Colonic Exercises for Asthmatics, The Adventures of Captain Marvel, Mend Your Own Pipes, The Complete Works of Edgar Allan Poe, p.o.r.nography and Paganism, Courtship Rituals of Papua New Guinea, Code-Breaking in Braille. How on earth could any of these help?

Lilith Starr had suffered an allergic reaction to something other than the chemicals in the recreational drugs she had taken, but what? Longbright took down A History of Vivisection A History of Vivisection and idly thumbed through it. Samuel, Lilith's former boyfriend, had disappeared, but Owen Mills was still around. Even though he wasn't with her when she died, he was still the only person who could shed some light on her condition. She decided to give him one last try, but found that his mobile was switched through to voice mail. and idly thumbed through it. Samuel, Lilith's former boyfriend, had disappeared, but Owen Mills was still around. Even though he wasn't with her when she died, he was still the only person who could shed some light on her condition. She decided to give him one last try, but found that his mobile was switched through to voice mail.

She looked up to see April dashing past with a bowl of wilted nasturtiums. 'What are you doing?' she called.

'The Princess is going to be here with half of the Home Office in two hours, and we've fulfilled none of the requirements on Rosemary Armstrong's list.' April looked as if she could do with some help.

'A few crummy old garage flowers aren't going to make any difference to our future now,' said Longbright despondently.

'No, but until I can come up with something better they will have to do,' April replied, not pleased at having to shoulder the responsibility alone.

'April, what did you do with that photograph of Lilith Starr? The one her father gave me?'

'It's on your desk in the file. Want me to get it?'

'Please.' Longbright placed herself in Bryant's seat, spreading her hands on his desk, amid the perfumed aroma of exotic rolling tobacco and the weird aftershave he favoured that no-one had sold for forty years. April returned with the photograph and handed it to her.

She examined Lilith's face, her clothes. Her arms. Digging into the desk drawers, she found Bryant's horn-handled magnifying gla.s.s and pa.s.sed it over the print. Lilith still had the tattoo when the picture had been taken. Samuel Samuel. It was clearly visible on her left arm.

Hidden in plain sight. She looked back at the volume of Poe, and thought of The Purloined Letter, The Purloined Letter, with its clue hidden right under the noses of the police. 'She must have removed it soon after this photograph was taken.' with its clue hidden right under the noses of the police. 'She must have removed it soon after this photograph was taken.'

'Maybe that's why she got rid of it,' said April, peering over her shoulder. 'The tattooist spelled her boyfriend's name wrong.'

'What are you talking about?'

'Look again. That's an a, a, not a not a u. u.'

Longbright stared at the bare arm once more. Samael Samael. 'Maybe it's right. Kids spell their names in a lot of crazy ways these days. Check with the tattoo parlour and see if he remembers.' She rose and collected her jacket.

'Where are you going?' asked April.

'To get the truth out of Owen Mills, even if I have to throttle it out of him,' said Longbright. 'He's the only one who's left alive to tell us what might have happened. Don't worry, I'll be back in time for our royal visit.'

Kershaw took Banbury with him to Bayham Street, hoping that the crime scene manager might spot something he had missed. He looked around the room in which he had spent so much time expecting to become the unit's next medical examiner. Part of him was perversely pleased that Finch had failed to recommend him. If he couldn't understand what had happened here, he would not consider himself worthy of holding the post. Today his career would live or die by the decisions he made.

Finch, found dead in his own morgue. Why had the blade of an extractor fan been used as a weapon? Because it had fallen, because it was there. 'If you meant to kill or at least wound someone, you wouldn't strike them with a piece of lightweight aluminium, would you?' he asked Dan. 'I mean, a child could tell it's no good as a weapon.'

'When you're desperate, anything will do,' said Banbury, pulling his head out of Finch's instrument cupboard. 'I've heard of pens, stereo speakers, coat hangers, candles and laptops all being used as a.s.sault weapons. Everyone knows that if you attack a burglar with a torch you're likely to get off, because it's an item you're likely to be carrying. You don't think Renfield clouted him?'

'I should imagine the good sergeant's training in the Met would have taught him not to leave marks,' said Kershaw. 'The business with the empty bottle of naltrexone still bothers me. Finch didn't use it on himself. There was nothing in his system.'

Banbury rose slowly to his feet and stared steadily at his colleague. 'My G.o.d, he used it on the corpse,' he said, heading for the cabinets. 'You heard Renfield. Oswald knew that the sergeant's boy had got it wrong; he realised she wasn't your usual Camden overdoser. He was trying to revive her when the sergeant reappeared. He must have been furious with him. He'd already had Owen Mills turning up in a state just after the body had been delivered, trying to understand why his girlfriend was lying on an autopsy tray, and it sowed doubt in his mind, so he pumped in the naltrexone and called Renfield back to have a go at him.'

Kershaw was already helping him to slide open the drawer and ease out the body bag containing Lilith Starr's cadaver. 'This is my d.a.m.ned fault. I was so preoccupied with Finch putting the blocks on my career that I didn't run the obvious checks. I'll bet he had doubts about the cause of death from the moment he saw the body. He'd have found obvious signs of cocaine and heroin use, but would have known the levels weren't enough to put her into a coma, so he tried to pull her out of it. When that didn't work, he started searching for something else, probably testing for the most common causes of anaphylactic shock. And either before or after Renfield returned, he discovered something, stopping to write it down.'

'Wait, that can't be right,' said Banbury. 'Renfield insists he didn't destroy the report, so Mills must have, but Mills arrived first, when Finch could only have just started working on it. So why would he have ripped it out?'

'You have a point, old chap. You don't think someone else was here?'

Banbury looked up. 'Who?'

'There is only one other person left: our missing man, the former lover-Samuel, the man with no surname.'

'Blimey, it seems like the morgue was busier than Camden Market on Tuesday morning.'

'An appropriate blasphemy,' said Kershaw excitedly. 'Blimey is supposedly short for G.o.d blind me, something that's been happening to all of us in this investigation. We've been blinded from the outset. Think, what else did you find here?'

'I've got Finch's handprints, Mills's trainers and Renfield's boot marks, but no fingerprints on your supposed weapon, the fan blade. Exactly where am I supposed to look for this invisible man?'

Meanwhile, Longbright had found Owen Mills in the very first place she looked-Lilith Starr's claustrophobic flat on the Crowndale Estate. The front door was ajar, and Lilith's belongings stood stacked in cardboard boxes in the hall. Mills was sitting cross-legged on the floor of her bedroom, sorting through a pile of drawings and photographs.

'Owen?' Longbright took a further step into the shadowed room. When he turned to her, she could see he had been crying, but he hastily wiped away the evidence with the tips of his fingers. 'I'm not going to go away, you know,' she told him, 'not until I've heard the truth. You see, I've been wondering about your last night together.'

'That's nothing to do with you.'

'How was she? You spent the evening here, right? How did she seem to you?'

Mills thought for a moment, caught by the question.

'Owen, I'll help you, I promise. I have the power to do that. If you care about her, you have to tell me how she was.'

'All right, she was kind of weird. Vague, you know? Not all there. She kept saying she had a chest pain. But she'd said that before. I don't want to talk about her.'

'I'm not here to disrespect your relationship with Lilith,' Longbright insisted. 'I think you've been through enough in the last two days. I know how much you cared for her, but I want to rule out your involvement in the death at Bayham Street.'

'Then talk to me about something else.' Part of him seemed anxious to tell her more.

'All right, let's talk about you. How are you coping?'

'Okay, I suppose.'

'What's your family arrangement?'

'I got three other brothers, two sisters. I'm the oldest.'

The detective sergeant seated herself on the floor beside him. 'Get on okay with your parents?'

'I don't know. I guess.'

'Did they meet Lilith? What did they think of her? I mean, you were serious about her, right?'

'She wanted me to marry her, I guess that's serious.'

'Did you introduce her to your mum and dad?'

'Yeah. Yeah, they met her once. They thought she was nice.'

'And to your brothers and sisters?'

'No.'

'Why not?'

'They respect me. They look up to me.'

'What, you didn't think Lilith was respectable enough for them?'

'Not that.' The wall of evasion Mills used as protection had suddenly reappeared.

'Owen, I'm going to need two answers from you about Lilith, then I'm out of your way. Can we make that a deal?'

'I don't have to answer anything.'

'I know, but you must be as anxious as I am to put the subject to rest. I'm convinced you took Finch's notes. Just tell me what you did with them.'

'I told you, I didn't take anything.'

'They were there before you turned up, and gone immediately after. He didn't tear them out himself, or we would have found them. If you're only prepared to tell me one thing, make it this. I won't ask anything more of you.'

'I didn't take them; he burned them. It was like, one page, okay? He did it for her.' His voice was toneless.

'You mean Oswald Finch burned his own notes? Why would he do that?'

'You don't need to know. It has nothing to do with your investigation.'

'I understand why you asked him, to protect her,' said Longbright. 'I know that. You didn't want her drug use to come out on the report that would be sent to her parents.'

'She hated her parents, but she felt like she'd hurt them enough. She said there was no point in kicking them beyond the grave, asked me to clean up behind her if anything bad ever happened, like she was expecting it.'

'Where can I find her former boyfriend?'

'Why do you need to know?' asked Owen wearily.

'I have to eliminate him from the investigation.'

'Well, you can do that, all right. He's dead and buried, innit. Gone forever.'

'When did it happen?'

'Eight months ago. That's why she took his name off her arm.'

'What happened? How did he die?'